Patents by Inventor Gregory P. Widin

Gregory P. Widin has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5402496
    Abstract: A noise and feedback suppression apparatus processes an audio input signal having both a desired component and an undesired component. When implemented so as to effect noise cancellation, the apparatus includes a first filter operatively coupled to the input signal. The first filter generates a focused reference signal by selectively passing an audio spectrum of the input signal which primarily contains the undesired component. The reference signal is supplied to an adaptive filter disposed to filter the input signal so as to provide an adaptive filter output signal. A combining network subtracts the adaptive filter output signal from the input signal to create an error signal. The noise suppression apparatus further includes a second filter for selectively passing to the adaptive filter an audio spectrum of the error signal substantially encompassing the spectrum of the undesired component of the input signal.
    Type: Grant
    Filed: July 13, 1992
    Date of Patent: March 28, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Sigfrid D. Soli, Kevin M. Buckley, Gregory P. Widin
  • Patent number: 4992966
    Abstract: A calibration device for an auditory prosthesis, such as a hearing aid, and an auditory prosthesis which contains such a calibration device. The calibration device comprises memory in which is stored information which is characteristic of information intrinsic to the invididual auditory prosthesis, the information being either information which represents a sufficient set of adjustment parameters required to calculate the transfer function of the auditory prosthesis or manufcturing information and a mechanism by which this information may be utilized by the auditory prosthesis or by the programming system of such auditory prosthesis.
    Type: Grant
    Filed: May 10, 1988
    Date of Patent: February 12, 1991
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Gregory P. Widin, Stephan E. Mangold, Mats B. Dotevall
  • Patent number: 4953112
    Abstract: A software model of the auditory characteristics of an auditory prosthesis is stored independently of the actual auditory prosthesis being fitted to determine the acoustic parameters to be utilized. A transfer function of the auditory characterictics of the individual auditory prosthesis to be fitted, or of an exemplary model of such an auditory prosthesis, is created, transformed into a table, or other usable form, and stored in software usable by the automated fitting program. The automated fitting program may then "test" or try by iterative process, the various settings for the acoustic parameters of the auditory prosthesis and determine accurately the results without actual resort the physical auditory prosthesis itself.
    Type: Grant
    Filed: May 10, 1988
    Date of Patent: August 28, 1990
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Gregory P. Widin, Mats B. Dotevall
  • Patent number: 4944301
    Abstract: A method for determining absolute current density through an implanted electrode measures the fundamental and harmonic components of an electrical current passing through the electrode and estimates the absolute current density from the ratio between the magnitude of the electrical current measured at one of the harmonics on the fundamental frequency. Another method of the invention applies a wideband noise input voltage to the electrode under investigation and measures the spectrum of the input voltage and output current to determine a first transfer function. A second transfer function representing an increase magnitude of wideband noise input voltage is also obtained. A difference transfer function is computed and used to determine absolute current density through the electrode. The methods may be practiced non-invasively.
    Type: Grant
    Filed: June 16, 1988
    Date of Patent: July 31, 1990
    Assignee: Cochlear Corporation
    Inventors: Gregory P. Widin, Christopher van den Honert
  • Patent number: 4901353
    Abstract: Hearing improvement device, auditory prosthesis, hearing aid, fitting device for these apparatus and method of fitting or determining new auditory characteristic by selecting and applying a vector consisting of relative changes to a plurality of individual ones of a set of acoustic parameters which determine the auditory characteristic of such apparatus. The method involves selecting a proper vector, applying the relative changes to the individual acoustic characteristics and, if necessary, utilizing or storing these new values of acoustic characteristics to obtain a new auditory characteristic for such apparatus.
    Type: Grant
    Filed: May 10, 1988
    Date of Patent: February 13, 1990
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Gregory P. Widin
  • Patent number: RE34961
    Abstract: A software model of the auditory characteristics of an auditory prosthesis is stored independently of the actual auditory prosthesis being fitted to determine the acoustic parameters to be utilized. A transfer function of the auditory characterictics of the individual auditory prosthesis to be fitted, or of an exemplary model of such an auditory prosthesis, is created, transformed into a table, or other usable form, and stored in software usable by the automated fitting program. The automated fitting program may then "test" or try by iterative process, the various settings for the acoustic parameters of the auditory prosthesis and determine accurately the results without actual resort the physical auditory prosthesis itself.
    Type: Grant
    Filed: May 26, 1992
    Date of Patent: June 6, 1995
    Assignee: The Minnesota Mining and Manufacturing Company
    Inventors: Gregory P. Widin, Mats B. Dotevall